Weekly Report: what happened at GRST last week (1208-1212)?

Last week GRST had an overall gain of 0.00%, the stock price moved from 0.0004 to 0.0004, last week's high was 0.0007, the low was 0.0004, and the cumulative volume was 8.65M.

● GRST reached a 52-week high last week on 11 December, quoting 0.0004.